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Compare the structural differences between arteries, veins and capillaries and how each difference helps efficient blood transport

In arteries, the main structural difference is the thickness of the arterial wall, due to an increased amount of smooth muscle, arteries have much thicker walls than both veins and capillaries to ensure they...
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Answered by Lauren G. • Biology tutor
10579 Views

Explain the stages of protein synthesis

Transcription - occurs in the nucleus. to prevent damage to the DNA, when a protein is required to be synthesised, a copy of that particular gene is encoded onto an mRNA (messenger RNA) molecule.The DNA Doub...
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Answered by Simran K. • Biology tutor
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Describe how the structure of glycogen allows it to perform its function and explain the advantages to animals of using glycogen as an energy store.

Glycogen is a polysaccharide composed of alpha glucose monomers which are a respiritory substrate involved in the production of energy (ATP). 1-6 glycosidic bonds between glucose allow glycogen to be branche...
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Answered by Fraser A. • Biology tutor
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Explain why a pH probe is required in a fermenter used for culturing micro-organisms.

It is important to monitor the pH of the fermenter to ensure this acidity can be detected and acid or alkali can be added accordingly to make sure the fermenter is at the optimum pH for the microorganisms. T...
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Answered by Madeleine O. • Biology tutor
13654 Views

Give the key characteristic features of a prokaryotic cell.

Prokaryotic cells are usually 1-10 micrometers in size. Prokaryotic cells have a cell wall, which is usually complexed with a peptidoglycan layer. Prokayotic cells do not have a nucleus. Prokayotic cells do ...
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Answered by Branislav V. • Biology tutor
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